This is what tech companies spent in Q3 2013, maybe someone else can post IBM's stats but Microsoft's spending doesn't look all that high to me.
Google 3.4M
Microsoft 2.2M
Facebook 1.7M
Apple 0.97M
Amazon 0.78M
I think the real story is how cheap the lobbying costs are.
What I completely fail to understand with all the Snowden revelations and stories like this is that Silicon Valley tech folks have enormous salaries and high disposable income.
If they would actually contribute some of that to a PAC or to the EFF, it would be way more productive than sitting in Starbucks sipping a $5 latte and posting "Not going to get the Xbox from M$. Getting a PS4 for $400 + games for $60 each instead! That's going to teach them! And Bill Gates sucks despite helping the poorest people in Africa and India!" from their latest MacBook or iPad Air on HN articles such as these(you can see those posts below).
I guess gathering HN karma feels better and is cheaper than actually trying to make a real difference on issues that people seem to write emotional posts about.
Having seen a lot of such issues and discussions from my Slashdot days, my prediction is that nothing will come out of it except a lot of hot air discussion.